Home / 20,421,914.31-28,182,241.11-11,254,557.06

Finding the Fourth Proportional to 20,421,914.31, 28,182,241.11 and 11,254,557.06

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Solution

The fourth proportional to 20,421,914.31, 28,182,241.11 and 11,254,557.06 is: 15,531,288.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,914.31 : 28,182,241.11 = 11,254,557.06 : x
  2. Step 2: Convert to fraction form
    20,421,914.31/28,182,241.11 = 11,254,557.06/x
  3. Step 3: Cross multiply
    20,421,914.31x = 28,182,241.11 × 11,254,557.06
  4. Step 4: Simplify right side
    20,421,914.31x = 317,178,640,651,172.75
  5. Step 5: Solve for x
    x = 317,178,640,651,172.75/20,421,914.31
  6. Step 6: Final answer
    x = 15,531,288.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.